Jebus man..
just make up your own mind.
You don't see many 1982 Falcons at car shows either.
get one of those..
Just incase it's not obvious to you... You want the GTR.
it's obvious.
everything anyone including yourself have said is that the GTST is newer, you know it's history, less maintenance etc..
and yet you keep going back to how the GTR is better in some way.
oh der!! of course it's better.
it's the top of the line in it's time.
Just bite the bullet and buy it.
it already has GTSS turbo's and good compression.
all you need now is PFC, Injectors, PUMP, AFM, tune.
then you'll see which car "feels" faster.